The question "what is an I-9 form" is a common one, especially for new businesses hiring employees for the first time or for employees looking for work for the first time in the U.S. Form I-9 is used to verify the identity and employment authorization of individuals hired for employment in the United States. This form must be completed by the employer and employee. Acceptable documents must also be provided by the employee that gives evidence of employment authorization and identity. The employer will examine all documentation to determine they are genuine and valid. The form must be kept for a designated period of time and made available for inspection on request from authorized government officials.